基于公钥算法改进型AKA协议安全性分析  

Security Analysis of the Improved AKA Protocol based on Public-key Algorithm

作　　者：刘振钧[1] 郭庆[1] 赖韬[1] 

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2013年第11期95-98,共4页Communications Technology

摘　　要：3G系统安全框架采用了3GPP组织建议的AKA协议机制,并对无线链路上传输的数据进行加密保护,对传送的信令消息进行完整性保护。比2G系统在无线空中接口的安全性上有了很大的提升。但是,自从AKA协议提出后,国外许多学者就对该协议进行了研究,提出了该协议存在的许多安全问题,同时给出了许多改进AKA的建议。采用一种协议元素机密性推导方法分析了3GPP AKA和改进型AKA的安全性,提出了改进型AKA存在的安全薄弱点,并提出了改进协议的方法。3G-system security framework, with AKA protocol mechanisms suggested by 3GPP organization, implements crypto protection of transmission data on wireless link ,including integrity protection of the sig- naling messages. Compared with 2G system, 3G system receives great improvement in the security of wire- less air interface. However, since the proposal of AKA protocol, many foreign scholars have carried out detailed study on the protocol, and found a lot of security problems, and proposed some suggestions for im- provement. In this article, the authors , with a protocol-element confidentiality derivation method, analyze the security of 3 GPP AKA protocol and the improved AKA protocol, then point out the vulnerability exist- ing in the improved AKA insecurity, and also proposes the method for improvement.

关 键 词：3GPP AKA 认证 密钥协商 

分 类 号：TN918.91[电子电信—通信与信息系统]